Even assemblers have to be certified.

If they're not, you could be purchasing a dangerous water ionizer. You'd be surprised how many water ionizers distributors in the US are selling water ionizers illegally! The most common problem is not getting their water ionizers listed with the FDA. Second, is not getting UL or NRTL certification. So, do your homework before you purchase!

First, their manufacturing plant, or the plants that they are purchasing from, have to be ISO 9001 certified. This ensures safety and quality. Also, countries like South Korea, where EOS is based, require that any manufactured medical device receive approval from their Food and Drug Department before it is exported.

Most assemblers ignore this requirement because it is stringent. For example, a KFDA approval from South Korea requires that all parts are medical grade and all tubing is food-grade. These are expensive requirements to meet. EOS has KFDA approval, so EOS water ionizers are certified medical devices. Because of this, EOS Water Ionizers are also listed with the US FDA as medical devices, meaning your insurance may cover their purchase. As you "compare water ionizers", keep in mind that it is ILLEGAL for a water ionizer that is approved as a medical device in one country to be sold here in the US without getting listed with the FDA.

Other certifications that are very important are NRTL or UL certification. Both of these ensure that the electrical power systems in the water ionizer are safe and compatible with existing power systems. Another certification that a manufacturer has to have to sell in Canada is CSA.

EOS water ionizers are CSA approved, have NRTL certification, are manufactured in a ISO 9001 factory, are KFDA approved, and they are listed with the US FDA.  So, EOS water ionizers are proven safe and effective.

Compare Water Ionizers Report Part 2: Comparing Plates and Filtration

http://waterforlifeusa.com/compare-water-ionizers